Various aspects of the subject technology relate to systems, methods, and machine-readable media for providing personalized services using a client-side user model. A client device is to transmit a request for a service to a server. The server is to receive a request for a personalized service for a user, transmit, to a data server, a request for user data for the user to be used to personalize the service receive, from the data server, a notification that the user data is stored on the client device in response to transmitting the request for the user data, and provide personalization instructions and the service to the client device. The client device is further to receive the requested service and the personalization instructions from the server, personalize the service using the personalization instructions and the user model stored on the client device, and provide the personalized service to a user.